An ArcGis geoprocessing tool that calculates the least-cost path from a source to a destination.

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2
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1answer
29 views

Find distances between points through a raster

I have a set of 79 points located overlaid on a raster that defines distance through coastal waters: each cell equals 100 metres, with NoData for coast and islands. I can use this raster to create ...
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1answer
28 views

Opposite of least cost path?

I've established how to run a Least Cost Path analysis in ArcGIS, but I'm wondering if you can run an analysis to find the hardest path between two points?
4
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1answer
66 views

How to get r.drain to run in QGIS/GRASS?

I use the GRASS GIS extensions for QGIS (QGIS version 2.12.3 with GRASS 6.4) and I have a problem with the r.drain algorithm: I simply cannot make it work with a given starting point as a vector ...
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0answers
30 views

ArcGIS Cost Path Analysis. How to extract the area covered by the many possible shortest paths?

As you can see in the picture ArcGIS Cost Path Analysis produces different results based on chosen direction (blue path direction: start->stop, red path direction: stop->start). As Cost Path ...
4
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2answers
48 views

Least Cost Path Distance to nearest polygon

I have multiple polygons (destinations) and an elevation raster. For each raster cell in my study area, I need to calculate the distance to the nearest destination polygon. If I use the 'as crow ...
3
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2answers
142 views

Least cost path between various points QGIS

Is there an easy way to find the least cost path (LCP) between various points in an open source GIS? This question has actually already been asked here: How to find a least cost path through several ...
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0answers
31 views

ArcGIS raster-based districting for equal population districts: cost allocation?

My goal is to define 13 starting points as centers from which 13 continguous, non-overlapping districts will "spread out" across a raster (containing population data for each cell) until each district ...
2
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1answer
47 views

Alternative Least Cost Paths

I'm working on site accessibility. Having various locations, I can identify the LCP going from one to any other. So, by default, LCP calculation is giving me the first most least-cost path only. I can ...
3
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1answer
79 views

How can I change the way r.cost and r.drain modules work?

Look at the picture #1. This is my cost surface raster that has only 2 values. Area restricted for path to cross (red one) and area that is free to go (yellow one). As I need it and as I undestand how ...
0
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1answer
58 views

GRASS 7 Cost surface and elevation points development

I'm a new to GIS and I need some help. At the moment, I'm trying to develop an optimal path across an area by using GRASS 7 features. It is very similar to the task given here. The problem is that I ...
2
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1answer
104 views

What is the best method for route cost estimation? [closed]

What would be the best method for calculating a rough adhoc route cost i.e. a potential road (been some years since I have used Network Analysis in ArcGIS), alternatively would it be better using ...
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0answers
50 views

Historical Traffic Condition + Vehicle Path Advise Required

I'm currently working on a project which involves tracing the path(GPS coordinates) taken by a vehicle (1) and measuring the traffic conditions(is it jammed and whats the speed during the time the ...
2
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0answers
103 views

Least cost path analysis : a lot of sources and destinations

I'm working on a 15*10 km area, splatted in a 50*50 m cell grid. I want to compute the time needed to travel from a single starting point to each cell centroid, combining driving and walking time. I ...
0
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0answers
22 views

Capping the amount of a certain cost per route with Network Analyst

With the Network Analyst extension in ArcGIS 10.2, is there a way to set the maximum amount of a certain cost that a route must not exceed? For example, can I require routes to be below a certain ...
0
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1answer
196 views

Cost Surface algorithm in ArcGIS

based on this arcticle "Extensions to least-cost path algorithms for roadway planning (Chaoqing, Jay, dan Mandy 2002)" see link below: ...
1
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0answers
94 views

GRASS GIS r.walk issue

I have been playing around with GRASS GIS to do a simple cost analysis of getting from point A to point B. I have a DEM clipped to the study area, a raster containing the friction costs, as well as ...
0
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0answers
44 views

Cost Distance for urban and roads?

I've been working in GIS for years but I haven't done much raster analysis until recently. I need to create a cost distance for an urban area for a land capability map, and also one for roads ...
3
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2answers
903 views

Cost Distance Analyst In QGIS?

Are there any tools, plugins or methods in QGIS which allows for an analysis of the best path between two points using least cost path method? As shown below ArcGIS has several distance tools.
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0answers
44 views

Euclidean Distance with Weighted Values

I am currently dealing with a dataset which consists of about 2700 points stochastically placed in a study area of about 650,000 sqKm. I am trying to create a distance raster for these points, which I ...
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0answers
110 views

How to find a least cost path through several points?

I want to do a least cost path analysis and the least cost path has to go through several different points instead of having just a start and end destination. Is this possible? I am using ArcGIS ...
0
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1answer
85 views

How to find out the length and friction costs of my least cost path?

I modeled different possibilities for transmission lines with the GIS tool "Cost Path". Now I would like to find out more information about my results. First of all: Where can I see the length of my ...
1
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1answer
201 views

Cost Distance interpretation in ArcGIS 10.2

I am using the Cost Distance tool in ArcMap 10.2 to find the how far it is to walk to the closest area of green space along the road network in a town. I have a input raster of the location of the ...
1
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1answer
74 views

How to create landscape resistance map using path level spatial randomisation in QGIS?

I need to create a landscape resistance map based on path level spatial randomisation, as I have read in some research papers. Are there tools for this? I need to randomly shift and rotate the the ...
0
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1answer
178 views

What exact format do I need to have for the inputs to make Path Distance work?

I am trying to run the Path Distance tool in ArcGis 10.1. Ideally I would like to utilize Tobler's hiking formula anisotropic approach to slope and a land cover cost surface to calculate the least ...
3
votes
1answer
102 views

Including rivers in least cost analysis in ArcGIS 10

I am relatively new to ArcGIS so please bear with me!! I am looking to find the least cost path between a number of points in a landscape (eastern Sicily) that avoids rivers (obviously a Roman cart ...
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0answers
103 views

Using the accCost() function in R: questions regarding the transition layer

I am trying to use the accCost() function from the gdistance package in R. I load my cost raster using the raster()function from the raster package. According to the documentation, I need first to ...
2
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2answers
312 views

GRASS tutorials, spec r.walk, r.cost

Recently got enamored with the idea of doing a time-based and an energy-based least cost path analysis. After doing some research, I see that GRASS is the best for executing time-based given the ...
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0answers
18 views

implement aspect in least cost path analysis to account for downhill and neutral ground movement [duplicate]

I am creating a least cost path model for large species that migrate over large distances across a rugged landscape (elk, deer, etc.) To calculate movement cost I am using a slope raster but I ...
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0answers
180 views

Best software for a least cost path analysis [closed]

Background: running a least cost path analysis across mountains in middle east for archaeology project. Ideally, pick several points across an arbitrary interval distance (e.g. 1 km apart) and same ...
3
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0answers
182 views

Cost Path: multiple pairs of sources and destinations

I have seen many questions related to this problem but very few answers. I am very new to scripting and using ModelBuilder, but I am trying to calculate the cost path for 200 polygons with a single ...
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0answers
58 views

CostPath gives error for specific points?

I am using the tool CostPath. As an input feature destination data I've entered several points (no specific value, just distributed geographically), and as the cost distance raster I've entered the ...
1
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1answer
255 views

How to create least-cost path between two polygons with GRASS?

I am completely a beginner in GRASS but I would like to use it to have the cumulative cost of moving between two polygons. More exactly, I would like to get the smallest cost from any point situated ...
0
votes
1answer
167 views

How to resolve ERROR 010271: Raster does not have an attribute table?

From my code which builds least-cost paths between several polygons by using the functions "CostDistance" and "CostPath" of ArcGIS , I obtain this error message: ExecuteError: ERROR 010271: Raster ...
3
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0answers
787 views

Cause of ExecuteError: ERROR 010067 from arcpy.sa.CostPath?

By using the code below that creates least-cost paths between several polygons, I obtain this error message: ExecuteError: ERROR 010067: Error in executing grid expression. Initalization failed ...
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2answers
6k views

What causes ValueError: I/O operation on closed file? [closed]

I obtain the following error message: ValueError: I/O operation on closed file Here is my code (It selects each polygon contained in the shapefile "selected_polygons.shp" and builds the least-cost ...
0
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1answer
5k views

What causes AttributeError: 'module' object has no attribute 'da'?

I have a shapefile "selected_polygons.shp" that contains 2000 polygons. I would like to select each polygon contained in the shapefile by using a search cursor in order to apply the function ...
0
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2answers
64 views

Handling 2s in cost path analysis output?

I am trying to compute shortest distance to stream from various point locations on the landscape. I am using the cost path tool in spatial analyst to do this . I am using a DEM as a cost distance ...
3
votes
1answer
402 views

Distance from rivers, taking into account terrain elevation

I am interested in building a raster of the distance from rivers in a territory under study. I have digitized the course of the rivers in ArcGis 10.1. I have used the 'Euclidean Distance' tool to ...
3
votes
2answers
97 views

Choosing projection to use for Least-Cost Path analysis at continental scale?

I am trying to find least cost paths from the southern USA to the Great Lakes region (for example). My resistance layers are currently in an equal area projection but I'm wondering if I should convert ...
0
votes
1answer
113 views

What is the right methodology to assign costs to edges of a network?

I am producing a routing facility for cycling safety based on an OSM network. The edges of this network have costs and these are calculated from different criteria both related to intrinsic (as the ...
0
votes
1answer
160 views

What is an anisotropic cost-of-passage map called in ArcGIS 10.1

I am trying to make sense of a few sources of information. In Geographic Information Systems in Archaeology Conolly and Lake (2006: 214-224) provide a sort of "step-by-step" procedure for creating ...
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0answers
102 views

Implement a least cost path in a graph

I am trying to produce a routing functionality in a web-GIS that, given a start and an end point, will retrieve the least cost path taking into account points along edges representing major costs, ...
4
votes
2answers
168 views

Path Distance calculation limited to downhill only

I am trying to calculate a path between two points with a relative elevation difference of about 100m and 3km separation. The points represent the start and end of a gravity fed waste water pipe. ...
1
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1answer
323 views

Cost Distance Paths in Python

I have a feature dataset with 317 points (UpperPoints) and another with 394 (LowerPoints) points. Now I want to calculate the cost paths as in this example here. However there are multiple files used ...
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2answers
235 views

Cost-Distance Tool not producing logical answer

I am working on creating a cost catchment based on Tobler's equation in ArcGIS10.1. I feel confident in my cost surface; it produces a raster where each cell equals the time in hours that it would ...
3
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0answers
112 views

How to create cost surface for least cost water transport analysis?

I am working on a project to derive least cost pathways between sites by dug out canoe travel. Has anyone worked on a similar project or found a function like the Tobler hiking function that can be ...
0
votes
1answer
35 views

whereClause syntax for Cost Distance parameter

I am looking to create a sql expression regarding point feature class and selection based on 'Name' field to pass to arcpy.sa.CostDistance() param[0]. similat to: savepath = env.workspace = ...
0
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1answer
39 views

Can I avoid decimal conversion calling CostDistance

Our client asked us to incorporate blockages and delays for movement of boats and ships on the local waterways. In our one process we are creating polygons of the distance a boat can move at top ...
0
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1answer
394 views

How to create a loop for multiple points with cost distance / cost path in ArcGIS 10.2 in python

I would like to know how to simplify the following code in order to execute it more efficiently than copy paste 82 processes (with a loop I guess?) but I don't know how to do it. There are 4 main ...
4
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3answers
260 views

How to model money cost as an accumulator in network analysis?

This is not necessarily a technical coding question, although any links that include coding are welcome if they are answering my question. I am looking for research or analysis that has been done in ...